INFICON Maxtek PM-700 Plating Monitor - Manual (Page 51)

PM-700 SERIES PLATING MONITOR
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4.8.2 Discrete Outputs
There are six Discrete Outputs available. These outputs will become true when
the monitor has reached a certain user programmed set points or when the monitor
is at a certain state. PrePlate Achieved Output will become true when the
displayed PrePlate thickness has reached the programmed PrePlate Thickness. In
the same manner, the Thickness Achieved Output will come on when the
displayed plating thickness has reached the programmed Thickness Endpoint.
Either Low Rate Alarm Output or High Rate Alarm Output will become true
should the displayed rate drops lower than Minimum Rate Alarm Setpoint or raise
higher than Maximum Rate Alarm Setpoint. Crystal A Failed Output will become
true when problems associate with Sensor Probe A is detected. Likewise, if
problems associate with Sensor Probe B is detected, Crystal B Failed Output (*)
will become true.
All discrete outputs are CMOS logic level signals, 0 to 5 VDC, and each has a
source impedance of 100 ohms. These outputs are designed to drive solid state
output modules, which then can be used to drive other external devices. Discrete
Output signals are provided through an eight pin Mini-Din circular connector. Pin
assignments are listed below and Figure 10 shows the connector layout drawing.